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/* Read IPv4 and IPv6 addresses on stdin and print their MMDB entries on stdout.
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This progam uses the MaxMind DB library (libmaxminddb) and MUST be
* compatible with its license (Apache 2.0).
*
* SPDX-License-Identifier: MIT
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <maxminddb.h>
#define MAX_ADDR_LEN 46
#define MMDBR_STRINGIFY(x) MMDBR_STRINGIFY_S(x)
#define MMDBR_STRINGIFY_S(s) #s
#define OUT_BUF_SIZE 65536
static const char *co_iso_key[] = {"country", "iso_code", NULL};
static const char *co_name_key[] = {"country", "names", "en", NULL};
static const char *ci_name_key[] = {"city", "names", "en", NULL};
static const char *asn_o_key[] = {"autonomous_system_organization", NULL};
static const char *asn_key[] = {"autonomous_system_number", NULL};
static const char *l_lat_key[] = {"location", "latitude", NULL};
static const char *l_lon_key[] = {"location", "longitude", NULL};
static const char *empty_key[] = {NULL};
static const char **lookup_keys[] = {
co_iso_key,
co_name_key,
ci_name_key,
asn_o_key,
asn_key,
l_lat_key,
l_lon_key,
empty_key
};
static void exit_err(void) {
fprintf(stderr, "Usage: mmdbresolve -f db_file [-f db_file ...]\n");
exit(1);
}
int
main(int argc, char *argv[])
{
char addr_str[MAX_ADDR_LEN+1];
size_t mmdb_count = 0;
MMDB_s *mmdbs = NULL, *new_mmdbs;
int mmdb_err;
char *out_buf = (char *) malloc(OUT_BUF_SIZE);
setvbuf(stdout, out_buf, _IOFBF, OUT_BUF_SIZE);
fprintf(stdout, "[init]\n");
// If we need to handle anything beyond "-f" we'll probably want to
// link with GLib and use GOption.
int arg_idx = 0;
while (arg_idx < argc - 1) {
if (strcmp(argv[arg_idx], "-f") == 0) {
arg_idx++;
const char *db_arg = argv[arg_idx];
MMDB_s try_mmdb;
mmdb_err = MMDB_open(db_arg, 0, &try_mmdb);
fprintf(stdout, "db.%zd.path: %s\n", mmdb_count, db_arg);
fprintf(stdout, "db.%zd.status: ", mmdb_count);
if (mmdb_err == MMDB_SUCCESS) {
mmdb_count++;
new_mmdbs = (MMDB_s *) realloc(mmdbs, mmdb_count * sizeof(MMDB_s));
if (new_mmdbs == NULL) {
free(mmdbs);
fprintf(stdout, "ERROR out of memory\n");
return 1;
}
mmdbs = new_mmdbs;
mmdbs[mmdb_count - 1] = try_mmdb;
fprintf(stdout, "OK\n");
fprintf(stdout, "db.%zd.type: %s\n", mmdb_count, mmdbs[mmdb_count - 1].metadata.database_type);
} else {
fprintf(stdout, "ERROR %s\n", MMDB_strerror(mmdb_err));
}
}
arg_idx++;
}
fprintf(stdout, "mmdbresolve.status: %s\n", mmdb_count > 0 ? "true": "false");
fprintf(stdout, "# End init\n");
fflush(stdout);
if (arg_idx != argc || mmdb_count < 1) {
exit_err();
}
int in_items = 0;
while (in_items != EOF) {
int gai_err;
in_items = fscanf(stdin, "%" MMDBR_STRINGIFY(MAX_ADDR_LEN) "s", addr_str);
if (in_items < 1) {
continue;
}
fprintf(stdout, "[%s]\n", addr_str);
for (size_t mmdb_idx = 0; mmdb_idx < mmdb_count; mmdb_idx++) {
fprintf(stdout, "# %s\n", mmdbs[mmdb_idx].metadata.database_type);
MMDB_lookup_result_s result = MMDB_lookup_string(&mmdbs[mmdb_idx], addr_str, &gai_err, &mmdb_err);
if (result.found_entry && gai_err == 0 && mmdb_err == MMDB_SUCCESS) {
for (size_t key_idx = 0; lookup_keys[key_idx][0]; key_idx++) {
MMDB_entry_data_s entry_data;
int status = MMDB_aget_value(&result.entry, &entry_data, lookup_keys[key_idx]);
if (status == MMDB_SUCCESS && entry_data.has_data) {
char *sep = "";
for (int idx = 0; lookup_keys[key_idx][idx] != 0; idx++) {
fprintf(stdout, "%s%s", sep, lookup_keys[key_idx][idx]);
sep = ".";
}
switch (entry_data.type) {
case MMDB_DATA_TYPE_UTF8_STRING:
{
char len_fmt[12]; // : %.xxxxxs\n\0
snprintf(len_fmt, 11, ": %%.%us\n", entry_data.data_size);
fprintf(stdout, len_fmt, entry_data.utf8_string);
}
break;
case MMDB_DATA_TYPE_UINT16:
fprintf(stdout, ": %u\n", entry_data.uint16);
break;
case MMDB_DATA_TYPE_UINT32:
fprintf(stdout, ": %u\n", entry_data.uint32);
break;
case MMDB_DATA_TYPE_INT32:
fprintf(stdout, ": %d\n", entry_data.int32);
break;
case MMDB_DATA_TYPE_BOOLEAN:
fprintf(stdout, ": %s\n", entry_data.boolean ? "True" : "False");
break;
case MMDB_DATA_TYPE_DOUBLE:
fprintf(stdout, ": %f\n", entry_data.double_value);
break;
case MMDB_DATA_TYPE_FLOAT:
fprintf(stdout, ": %f\n", entry_data.float_value);
break;
default:
fprintf(stdout, ": UNKNOWN (%u)\n", entry_data.type);
}
}
}
} else {
// dump error info.
}
}
fprintf(stdout, "# End %s\n", addr_str);
fflush(stdout);
}
free(mmdbs);
return 0;
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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